Make size on an infinite each_slice enumerator return Infinity

Fixes [Bug #15889]

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ruby/test_enumerator.rb b/test/ruby/test_enumerator.rb
index 6bc776dee5..54dfebb814 100644
--- a/test/ruby/test_enumerator.rb
+++ b/test/ruby/test_enumerator.rb
@@ -113,6 +113,11 @@ class TestEnumerator < Test::Unit::TestCase
     assert_equal([[1,2,3],[4,5,6],[7,8,9],[10]], (1..10).each_slice(3).to_a)
   end
 
+  def test_each_slice_size
+    assert_equal(4, (1..10).each_slice(3).size)
+    assert_equal(Float::INFINITY, 1.step.each_slice(3).size)
+  end
+
   def test_cons
     a = [[1,2,3], [2,3,4], [3,4,5], [4,5,6], [5,6,7], [6,7,8], [7,8,9], [8,9,10]]
     assert_equal(a, (1..10).each_cons(3).to_a)